Combined typewriting and computing



May 28, 1940. H. 1. PETMAN COMBINED TYPEWRIIING AND COMPUTING MACHINE 7 Sheets-Sheet 1 Filed Aug.

INVENTUR HENRY L. PITMAN BY/&

A QRNEY May 28, 1940. H PlTMAN 2,202,671

COMBINED TYPEWRITING AND COMPUTING MACHINE Filed Aug. 19, 1938 7 Sheets-Sheet 2 INVENTOR HENRY L. PITMAN AT ORNEY May 28, 1940. H. 1.. PITMAN COMBINED TYPEWRITING AND COMPUTING MACHINE Filed Aug. 19, 1958 '7 Sheets-Sheet 3 INVENTOR HENRY L. PITMAN Y4 ATTORNEY May28, 1940. H L, PITMAN 2,202,671

COMBINED TYPEWRITING AND COMPUTING MACHINE Filed Aug. 19, 1938 7 Sheets-Sheet 4 y 1940- H. 1.. PITMAN 2,202,671

COMBINED TYPEWRITING AND COMPUTING MACHINE Filed Aug. 19. 1938 '7 Sheets-Sheet 5 FIGIZ v H813 w J i L? 1/06 W 220 P 222 1/7 6 d/ gllllllllIlllllll lIl llllJll'lll lllllilllk 6 mm 32" ii? 5: \w. ,5 w Fr +3 EH U UW L H170 LJ 80" I X XXX X X XXX -X X XXX XX X XXX XXX XXX XX INVENTOR HENRY L. PITMAN y 8, 1940. H. L. PETMAN 2,202,671

COMBINED TYPEWRI'IING AND COMPUTING MACHINE Filed Aug. 19, 1938 '7 Sheets-Sheet 6 INVENTOR HENRY L. PITMAN W TORNEY May 28, 1940. H. PITMAN.

COMBINED TYPEWRITING AND COMPUTING MACHINE Filed Aug. 19, 1938 7 Sheets-Sheet 7 FIG. I?

FIG. I8

INVENTOR HENRY L.PITMAN /r;

TORNEY nu 65' mm u n'un mun Mun Patented May 28, 1940 COMBINED TYPEWRITING AND COMPUTING MACHINE Henry L. Pitman, Hartford, Conn., assignor to Underwood Elliott Fisher Company, New York, N. Y., a corporation of Delaware Application August 19,

' 8 Claims.

This invention relates to a combined typewriting and computing machine of the Underwood- Hanson class exemplified in my United States Patent No. 1,927,951, dated September 26, 1933.

In said machine, typewriting mechanism is operatively connected to a computing mechanism which includes one or more sets of computing wheels, a set of indexable drivers for each set of wheels and a general operator for the drivers.

10 Operation of the numeral-type keys to print an amount, while the letter-feed carriage traverses a computing zone, causes said amount to be indexed in said drivers; the carriage acting at said zone, by means of denomination-selecting mechanism, to shift the drivers seriatim into position wherein numeral-type-key-operated digltindexing mechanism is effective to set digitpins in the drivers. The general operator is cycled after the indexing of the drivers to actuate the latter, by means of the set digit-pins, to accumulate said amount in the computing wheels.

Totals are accumulated, according to item classificatlon, in different registers, each of which may be of large grand-total capacity, say a capacity of twelve denominations. With reference to lesser totals, which may never exceed say six denominations, the larger register has an excess capacity.

An object of the invention is to make provision for utilizing said excess capacity or higher denominations of a register for accumulating a lesser total, aside from another lesser total which may be accumulated in the lower denominations of the register. Thus, instead of having say two individual or separate register-units, each of large grand-total capacity, the machine would have, comparatively, a single register of large capacity for large totals, and usable sectionally for accumulating two or more lesser totals.

. The invention provides novel means for selecting automatically, under control of the carriage, different sections of a register. For example, the carriage, at a given computing zone, may effect, by said means selection of one see- 45 tion of the large capacity register for one lessertotal classification, and may efiect, at another zone, selection of another section of said same register for another lesser-total classification.

Said novel means include provision whereby the carriage may effect, at a given zone, selection of two or more sectionsof the register for a total or item involving up to the full-register capacity of denominations. In accordance with these aims, the invention also makes novel provision whereby the denomination-selecting mechanism 1938, Serial No. 225,762

and denominational tabulating-key mechanism, which are each of full-register range of denominations, are properly correlated to the sectional or full use of the register. By said latter provision, tabulation of the carriage to the units denomination of a computing zone, for example, would cause the carriage at said denomination to select the computing-wheel driver which corresponds to the units denomination of whichever register-section is selected for said zone and shift said driver to the above-mentioned indexing position.

A localized field of register-controls traversed by the typewriter-carriage includes a series of denominational jacks serving to shift the computing-wheel drivers seriatim to said indexing positions, one jack for each denomination of the register of large grand-total capacity. Said l0- calized control field also includes, for each predetermined sectional part of a large capacity register, an element which is selectably engaged by the carriage to determine use of said sectional part of the register at a computing zone.

The invention is applicable to a machinehaving one or more than one of the large capacity registers, in that it may be applied to operate one or more of said large registers sectionally.

For example, in the herein-illustrated machine,

three register units of large capacity are shown,

and each register unit is usable by means of the invention as a large capacity register, orsectionally as two lesser capacity registers. Only one series of denominational jacks is provided consonantly with the localization of the field of register-controls; and said single or master series of jacks may have connections ramifying to the several sets of computing-wheel drivers corresponding to the plurality of large capacity register units. The several sets of branches, into which said connections ramify, are normally dis connected from their corresponding sets of computing-wheel drivers. For the purpose of the invention, a set of the computing-wheel drivers may of denominational jacks, is also provided on the carriage for @ch work-sheet column. The'proand tapp to the number of denominations of the registersections controlled by the respective ones of said elements, makes it feasible to make the spacing of the work-sheet columns or zones substantially commensurate with the number of register-denominations used for each column, whereby excessive separation of the work-sheet columns, on

, account of use of the large capacity register for accumulating small items, is avoided.

Certain features of the invention relate to novel tion or subtraction for either of\ the register sections as well as for the entire register unit.

This application is in part a continuation of my co-pending application, Serial No. 72,348, filed April 2, 1936, now Patent No. 2,160,4237, dated May 30, 1939.-

Other features and advantages will hereinafter appear.

In the accompanying drawings: 1

Figure 1 represents a continuation of the left side of Figure 2.

Figure 2 is a sectional side elevation of the combined typewriting and computing machine including mechanism in which the invention is embodied. v

Figure 3 is a perspective of the mechanism in the computing base comprising the lower portion of the set of denominationalselectin'g trains, the means whereby said traim ramify to a plurality of sets of computing wheel drivers or register bars and the means whereby one or more sets of cornputing-wheel drivers are connectible sectionally to said denomination trains, some of the parts being sectioned to clarify details.

Figure 4 is a perspective, companion to Figure 3, showing the upper mechanism whereby the typewriter carriage controls the. portions of the denomination and register section selecting mechanisms seen in- Figure. 3.

Figure 5 is a front view of the tappet unit and a register selecting element coextensive with two sections of the register and operatively connected for controlling both sections of the register.

Figure 6 is a perspective of register selecting elements having cam edges coextensive with cor-' responding register sections and placed one'behind the other.

Figure 7 is a perspective, partly sectioned, of a portion of the register-section selecting mechanism in the computing base and the means whereby operation of the cycling mechanism serves to insure restoration of said selecting mechanism. Figure 8 is a front view, partly sectioned, o the devices which sectionally operate the set of couplers that connect the register-bars to the denomination-selecting trains; and shows the means for effecting withdrawal of a state-controller latch at selective operation of said devices. Figure 9 shows the mechanism of Figure 8 in perspective, the couplers being omitted, and some of the parts sectioned to bring out details.

Figure 10 is a fragmentary perspective'of the state-controller and latches therefor, and correspongds to a section on the trace l0-'-l0 of Figure a Figure 11 is similar to Figure 8, the latter representing the state-controller latch withdrawn at engagement of one section of the set of couplers, while Figure 11 shows said latch withdrawn by engagement of another section of the couplers.

Figure 12 is a front view of the register-sectionselecting elements and companion slides, and represents the engagement of one of said elements by the tappet-unit.

Figure 13 is a front view of the set of denomination and punctuation jacks, and represents the tappet-unit in engagement with one of the punctuation jacks for actuating a key-lock.

Figure 14 is a side view of the key-lock and the connections from the latter to the setf'of punctuation jacks.

Figure 15 is a diagram illustrating a work-sheetform and a corresponding set-up of tappet-units on the typewriter-carriage relative to the register-controls.

Figure 16.is a perspective illustrative of variant schemes of connections of sets of distributive racks, for the several registers, to a master set of cross blades.

Figure l? is a diagram illustrating a set-up of tappets and cam plates for the scheme of contype actions of the typing system, the alphabet type-actions being represented by the alphabetkeys it. The usual letter-feeding carriage til supports a case-shiftable frame 5c, in which a platen 5i is journaled, said carriage running upon rails 52, 53 mounted in the typewriter-frame 56.

At operation of any type-action, the usual universal bar 55, escapement-dogs 56, feed-rack Ell], escapement-wheel 58 and carriage spring-motor cooperate to letter-feed the carriage 639.

The computing base B may have one or more register-units. The register-unit isof the kind shown in my aforesaid Patent 1,927,951, in that provision for driving its computing wheels El oppositely for addition and direct subtraction includes a set of register-barsliiz and idlers 63 permanently in mesh with racks 64 on said registerbars. Said computing wheels 6i normally stand disengaged both from said idlers 63 and said racks 68, Figures 1 and 2, and means for shifting them rearwardly to mesh with said idlers, or downwardly to mesh with said racks, include a shiftable frame 65, in which said computing wheels 61 are mounted.

Each register-bar has digit-pins 6",6'|. For setting a digit-pin 6'! in a register-bar; the latter must be slightly advanced to align its pins 61 with pin-setting bars 68 which form part of the usual set of Underwood-Hanson pin-setting linkages 69 representing different digits. Each numeral key-lever 45 has a pendant rod 10 to engage an arm ll of a rock-shaft it to rock the latter and thereby actuate the corresponding linkage 69 Eli 2,909,671 V to set, in whichever register-bar is slightly .adbase B, the latter being provided with guidevanced, the digit-pin 61 corresponding to said numeral key-lever 45, each linkage 69 including one of said rock-shafts 12.

A denominational tabulating mechanism is represented by denominational tabulating keys 14, Figure 2, and denominational carriage-stops I5. Said denominational keys I4, stops l5, and the cooperating carriage-release means, not shown, may be of the kind shown in Helmond Patent No. 1,858,447, dated May 17, 1932.

The machine is shown as having three registerunits, each register-unit having its individual set of register-bars 62 as represented in Figure 3; it being understood that, for driving the companion set of computing wheels 6| reversely, there are associated with each set of register-bars 62 a set of the idlers 63 and the shiftable frame 65 for said computing wheels.

The usual reciprocatory cross-bar I6 of the cycling mechanism is common to all of the register-bars 62. Said cross-bar l6 coacts with the digit-pins 61, set in its path by the indexing operation, to advance the register-bars to the indexed extents at the advance stroke of said cross-bar, the computing wheels 6| having been first shifted, as will be explained later on, to engage either the racks 64 or the idlers 63. At the return stroke of the cycling cross-bar 16, the latter engages shoulders 71 of the advanced register-bars 62 to return the latter, the computing wheels 6| having been disengaged first from the racks 64 or idlers 63. The usual spring-devices I8 become effective to retract the returned register-bars sufficiently from said cross-bar 16, after the latter has reached the end of its return stroke, to permit the aforesaid slight advance of the register-bars for the pin-setting operations.

Each of the three register-units is represented herein, by way of example, as having twelve register-bars 62 for accumulating totals up to twelve denominations. For each of said twelve denominations, there is a denominational tabulating stop 15 and its companion key 14. The denominational stops 15 are guided vertically in a housing 19 on the typewriter-frame 54, and, for each computing zone of the carriage 49, the latter presents a counter-stop 80 which is engaged by any upwardly projected denominational stop 15 to arrest the tabulating advance of the carriage at a corresponding denomination in said zone.

A set of denominational jacks 8| corresponds in number to the number of denominations (twelve) in a register-unit, and is grouped behind the set of denominational carriage-stops l5. Said set of jacks is common to the several sets of register-bars 62, and the carriage presents for I each computing zone a tappet 82 for depressing Iii said jacks seriatim as the carriage traverses said zone step by step at operation of the numeraltype actions.

Said denominational jacks 8| are guided vertically in a housing 83, which is supported by attachment to the denominational carriage-stop housing 19, by means of a lower bracket 84, and an upper bracket-plate 85 which also spaces and guides said denominational tabulating stops I5. For spacing and guiding the denominational jacks 8| and similar punctuation jacks 86, which are interspaced with said denominational jacks, the housing 83 has an upper slotted guide-bar 81 and a companion face-plate 68, and also has lower guide-plates 89, 90. The denominational jacks 8| are incorporated'in the typewriter-unit A and abut against companion rods 9| in the computing plates 92, 93, for spacing and guiding said rods 9| at their upper ends. Said rods 9| diverge to correspond in spacing, at their lower ends, with a set of bell-cranks 94 mounted on a fulcrum-rod 95, saidbell-cranks 94 connecting said rods 9| to a set of denominational horizontal rods 96, mounted for endwise movement in a frame 91.

Said horizontal rods 96, bell-cranks 94, vertical rods 9| and denominational jacks 8| form a master set of denominational trains, which for the purpose of the invention, may ramify to the register-bars 62 of the several register-units. For accomplishing such ramification use is preferably made of certain devices, set forth in my copending application Serial No. 604,691, filed April 12, 1932, now Patent No. 2,090,852, namely, a bed of cross-blades 98, one for each denomination, and sets of distributive racks 99 corresponding to the sets of register-bars 62, and connected by said cross-blades 98 to said rods or masterracks 96; each cross-blade 98 being connected to a master-rack 96 and all of the distributive racks 99 of the same deniminationby teeth I00, provided on each rack 96, 99. The cross-blades are rockable upon their lower edges in notches aiforded by the frame 97, which is supported by a cross-member I02 of the computing base framework.

For connection and disconnection to and from its companion register-bar 62, each distributive rack 99 has hinged thereto an arm or coupler 03. The full and dotted outlines in Figure 2 represent, respectively, the normal or ineffective, and the effective positions of the coupler it. In the effective position, the coupler I03, by engagement with a roll 34 on the register-bar 62, operatively connects the latter with the distributive rack 99, so that a slight advance of said rack 99 by the companion carriage-actuated master-denominational train is transmitted to said register-bar 62, to bring its digit-pins 61 under the pin-setting-bars 68. With the coupler in ineffective position, said slight advance of the distributive rack 99 has no efiect on the registerbar 62.

For selectively using the register-unit sectionally, novel means are provided wherebythe set of couplers for the register-unit may be controlled sectional ly by the carriage. For example,

- in the herein shown register-unit of twelve denominations, the section of six couplers I03 for the six highest denominations and the section of six couplers I03 for the six lowest denominations, may be controlled independently of one another. Inthis way, the section of six highest denominations of thetwelve denomination regall) ister-unit and thesection of six lowest denominations of said register-unit, may be used independently, as for accumulating separate totals in each section.

The novel organization is arranged, by way of example, for using the section of six highest and the section of six lowest denominations of each of the three twelve denomination registerunits, herein shown, separately; so that the three twelve-denomination register-units afford six register-sections of six denominations each. For each register-section there is an independent train, whereby the carriage controls the corresponding section of couplers I03.

Each register-section-selecting train includes a plate I05 which, as it is traversed by a registersection-selecting tappet I06 on the carriage 49, is in depressed position, Figure 12, for placing the corresponding section of couplers I 03 in eflectlve position; the rest of the-train including, in order, a slide II", a push-rod I08, a lever I09, connections from said lever I09 to a rock-shaft H0, and a. coupler-section shifter III operable by said rock-shaft III'I. Said connections are adapted according to the relative placement of said lever I09 and rock-shaft IIO, the several levers I09 being grouped, Figure 3, on a common fulcrum rod I I2 while the array of the several rock-shafts III) is spread across the machine.

The several cam-plates 805 are spaced parallelly and grouped as in Figure 4, and are guided by upper and lower combs I 83 provided on side walls Ill .of the housing 83. Each cam-plate I05 has an upper edge contour 8 I5 proportioned relatively to the tappetIIlG so that the latter at its engagement with said contour maintains said cam-plate I05 depressed, and the companion section of couplers I03 in effective position, while the carriage traverses a zone of the same number of denominations (six) as the register-section. The tappet I06 depresses the cam-plate M5, by overriding the bevel H6, as the carriage moves to the highest denomination of said zone, and said tappet leaves the cam-plate at a similar beve] for consequent restoration of the cam-plate M and the rest of thedescribed train as the carriage moves from the last or lowest denomination oi said zone. Said train, together with its section of couplers 03, is restored by a spring Mil which may act on the rock shaft Mil as indicated in Figure 3. The spring-pressed-restoring movement of the train is limited as by abutment of the end of a guide-slot El it in the coupler-shifter lit with a guide-stud Md, said rock-shaft Mb having an arm IN, and a stud 12H thereon, errgaging a slot I22 of the coupler shiiter Mfl.

A register-bar-gui-ding plate 623, attached, for each register-unit, to bosses tilt on the irame= Work-cross-member i822, mounts the two coupler shifters m, for aid register-unit, by means or said guide-stud H9 and guide-studs [122 3, Figure 11. The couplers We extend forwardly through an opening E23 in said plate H23, and the couplershifter l l I has, within said opening (123, a shoulder Mi and also has, behind said plate i223, a portion flit to engage the couplers M3.

The connections from the levers W9, onthe common. fulcrum rod M2, to their companion rock-shafts IlEi include levers (125, each engaged by the companion lever its, as at (1%, Figure 3. Said levers 525 are shown arranged in two groups, each group having a common fulcrum-stud i271 projecting from the cross-member use of the computing-base framework. The levers B25 in each group may be connected to arms i253 of the corresponding rock-shafts Mt by links 5299 or by pin-and-slot connections as at no, figure .3. The rock-shafts M0 may be journaled in lugs I3I on said cross-member M2. The push-rods I08, pivotally connected at their lower ends to the levers 609, are guided at their upper ends by plates I32 provided in the computing base B and project above said plates for engagement with the companion slides l Ill which work in upper and lower slotted cross-bars ltd provided in the housing 83. The relatively crossed groups of cam-plates I05 and slides till are appropriately connected by tabs l35 which may be provided on said slides Ml.

Half of the several cam-plates m5 may have their tappet-engaged edges M5 laterally odset as a group from the group of similar edges MES or the other half of said slides as in Figure d. The

right-hand and left-handgroups of said tappetengaged edges Illcorrespond inversely with the left-hand and right-hand sections, oi the several register-units, it being remembered that the carriage moves from the highest to the lowest denomination in leftward direction while the progression of the register denominations from the highest to the lowest is to the right. There is similar transposition in the orders in which the 1 master-racks 96 and the distributive racks 99 of the denomination-selecting trains are connected to the bed of cross-blades 98. Each denomination-selecting train is urged by a spring v I38 attached to the master-rack 96, to normal position determined bya stop, not shown, which engages the cross-blade 98.

The punctuation jacks 86, and a dummy jack 638, connected to a key-locking train, work as a unit by means of a bail I31 pivoted to the housing 83 and articulated to said jacks 86, 538 by pin-and-slot connections I36. The key-lock train, Figures 13 and 14, includes a push-rod causing said arm M4 to fill the usual gap in the series of tumblers to block said pendent stems 1st, and thereby lock said numeral-key levers.

The hey-lock and punctuation-jack train is restored, as the tappet 82 leaves the punctuation jack, by a spring it'll, Figure 2, pulling on an arm 148 of the rock-shaft Mil, said arm Mt stopping against a cross-bar MS of the computing-base framework. ihe weight of the punc-= tuation jacks at, E38 and the bail ltl' is counterbalanced in part by a spring 65d fastened to the face-plate 88 and pulling on said bail 63?.

The tabulating counter-stop 8b, the denomination-selecting tappet 82, and the register-sectime-selecting tappet or tappets Gilli are incor-- porated, for each computing zone, in a tappet= unit 156.

A main supporting rack E52 and an auxiliary rack (153 provided on the carriage serveto support and locate the tappet-unit. A body block (15% of the tappet-unit has teeth for articulation of the tappet-unit with racls -teeth 658 provided along the bottom of the main rack H52. A strip i553 of resilient metal, attachedto the top of the hody=bloclr Edd, as by screws tut, is formed into a clip Mil! at its ends, to engage a groove Keeper-plates I12 retain the tappets I06 in the block I54.

A roller ITI upon the tappet-unit l5I, fits a track H8, supported by the housing 83, to brace the tappet=unit ibfl as it traverses the localized grouper register-controls comprising the reg The tabu- Ister-section-selecting cam-plates m, and the jacks 8I, 86.

The tappet-unit II has a tooth I I8 for rocking a cycling trip-lever I80 traversed by the carriage 49 and pivotally supported by the plate 88. Said lever I80, incorporated in the typewriter-unit A, is connected as at I8I to a train, similar to the denominational jack-train, and comprising rods I16, I16, and a bell-crank I82, Figure 4, to work a lever, in the computing base B, comprising an arm I83 operative to trip a clutch-mechanism, not shown, to connect a suitable power drive, not shown, to a shaft I88 for cycling the latter by power. Said shaft I88 may have a connection to drive the general operator which includes the register-bar-driving crossbar I 5 for reciprocating the latter at a revolution or cycle of said shaft I88. Said connection, not shown, may be of the kind shown in my co-pending application No, 15,789, filed April 11, 1935, and briefly described, comprises a crank, not shown, on said shaft I88 and a pitman, not shown, connecting said crank to one of the side plates I88 which connect said crossbar I6 to the usual side-racks I90 of the general operator, said side-racks I80 being each geared to the usual cross-shaft IOI, Figure 2, as described in my aforesaid Patent No. 1,927,951. Said clutch mechanism may be as shown in Patent No. 1,299,646 to Wood, dated April 8, 1919.

The diagram at Figure exemplifies a setup, on the carriage 49, of the tabulating counter-stops and tappet devices relative to the localized group of the tabulating and register controls 75, 3|, 505, said set-up being for a worksheet form I93. The first column of said form I93 is for amounts which total no more than six denominations and are to be entered, by way of example, in the register section consisting oi the six lowest denominations of the first twelvedenomination register-unit from the left in the computing base. The set-up includes accordingly for said first column a tappet-unit (I5I in Figure 15), which has, besides the counter-stop 80 and the denomination-selecting tappet 82, a register-scation-selecting tappet I06 located on said unit I5I for engaging the edge 5 of the second cam-plate I05 from the front, Figures 4, 15.

At the operation of one of the tabulating keys I4 of the six lowest denominations, the carriage will advance and be arrested as the counter-stop 80 of said unit I5I strikes the carriage-stop I5 projected by the operated tabulating key I4. At

. release of said tabulating key I4 and retraction of the stop I5, the carriage settles as usual at the corresponding denomination, and said second cam-plate I05 from the front will have been depressed by the tappet I06 of said unit HP, and thereby the section of couplers I 03, controlled by said second cam-plate from the front, will have been moved to effective position to connect the section of register-bars of the six lowest denominations of, the first register-unit to the corresponding denomination-selecting trains, which it will be remembered include the jacks 8I traversable by the tappet 82 of said unit I5I It will be seen now that said tappet-unit I5I can select noother register-section in the computing base but the one represented by its particularly placed tappet I85, namely, the section consisting of the six lowest denominations of the first register-unit from the left. The desired register-section having thus been selected for said first column, the printing of an amount proceeds as usual, and concomitantly the amount is indexed in the appropriate ones of the regis ter-bars 8g of the six lowest denominations of the first register-unit. Following the printing and indexing of the amount, the general-operator cross-bar I6 is reciprocated to actuate the indexed register-bars to accumulate the'indexed amount in thecomputing wheels BI, which become engaged with the idlers 53 or, racks 54, the accumulation being limited to the computing wheels of the six lowest denominations of the first register-unit, inasmuch as no total of amounts entered in said first column exceeds six denominations.

Suitable carry-over mechanism (not shown) may be of the kind shown in my aforesaid Patent No. 1,927,951.

The second column of the work-sheet form 593 in Figure 15 is also for amounts or totals not exceeding six denominations, and, by way of example, said amounts are to be accumulated in the register-section consisting of the six lowest denominations of the middle registerunit of twelve denominations in the computing base 13. A tappet-unit (I5I in Figure 15 for said second column is accordingly provided in the set-up and has, besides the counter-stop 80 and denomination-selecting tappet 82, a register-section-selecting tappet I06 located to engage the cam-edge II5 of the fourth cam-plate I05 from the front, Figures 4, 15. Thus, by tabulating the carriage to the second column position and desired denomination therein, said fourth cam-plate I05 will become depressed and the corresponding section of couplers I03 become moved to efiective position to connect the section of register-bars 62, consisting of the ones of the six lowest denominations of the middle register-unit, to the corresponding denominational trains. The amount printed in said second column Will, therefore, be indexed and accumulated in the register-section consisting of the six lowest denominations of said middle register-unit.

The third column of the form I93 is also for amounts or totals not exceeding six denominations, said amounts to be entered, by way of example, in the register-section consisting of the six highest denominations of the middle registerunit. The six lowest denominations of tabulator-keys I4 and corresponding stops I5 are used to tabulate the carriage to the third column position irrespective of the use of a registersection consisting of the six highest denominations of a register-unit A tabulating stop 80 is therefore placed, for said third column, with reference to said six lowest tabulating denominations. But the register-section-selecting tappet I 06 and denomination-selecting tappet 82 are offset six denominations (not counting punctuation spacesito the right of said third-column tabulating stop 80. The provision for the third column, in the set-up of tappet-units on the carriage, may therefore include, Figure 15, two complementary units I5I One of said complementary units I5I has only the counter-stop 80 and is placed on the carriage with reference to the aforesaid use of the tabulating stops I5 of the six lowest denominations. The other complementary unit I5I has a denominationselecting tappet 82, and also has a register-selecting tappet I08 placed to engage the edge H5 of the third cam-plate I05 from the front, Figure 4, said other complementary unit I5I being placed to effect the aforesaid offset, of its tappets ins am 5 82, we, of six denominations to the right of said counter-stop till. I

By the described offsetting of the counterstop til from the tappets 82, Hull for said third column, the section of denominational jacks ill, which comprises what are ordinarily the six highest denominations of the full complement of iaclss ill, is denominationally correlated to the section of tahulating stops id of the sh; lowest denominations. For example, if the ta loulating hey i l for the tens of hundreds denomination is pressed to position the carriage for typing, in the third column of the form E93, the amount la i9, the taloulating stop designated s in Figure 15 will he projected and will arrest the resulting advance or the carriage by engaging the counter-stop of the unit i56 which is ofiset as described, relatively to the tappets 82, not for said third column. With the carriage thus po-= sitioned, the denomination jack. marked d, in Figure 15, and the third cam-plate from the front will have hecome depressed, respectively, by said tl'iird' column tappets 82, M16, and therefore, as the amount 75.49 is printed, it will hecome concomitantly indexed in the register-sec tion consisting of what are ordinarily the six highest denominations of the middle registerunit of twelve denominations.

The fourth column of the form [193 is for amounts or totals up to twelve denominations, said amounts being entered, by way of example, in the right-hand register-unit of twelve denominations. A tappet-unit (fliil in Figure 15) for said fourth column, includes, besides the counter-stop 8d and the denonunation-selecting tappet 82, two of the register-section-selecting tappets tilt placed to respectively engage the edges 0:15 of the fifth and sixth cam-plates M95 from the front, Figures 4 and 15. Thus, while the carriage traverses the six highest denomi-' nations for said fourth column of the form [193, the .fiith cam-plate Mid from the front will be depressed, and thereby the section of six cou plers tilt of highest denominations will have become shifted to effective position to connect the six highest denomination-register bars of the right-hand register-unit to the corre-- sponding section of denominational trains.

- Then, as the carriage reaches and traverses the six lowest denominations for said fourth column, the sixth cam-plate will become depressed, and thereby, in turn, the six lowest denomine tion-register bars (62 of said right-hand register= unit will become operatively connected to their corresponding section of the denominational trains.

Full use of a register-unit, as, for example, for the twelve-denomination fourth column of the form H93, may also he provided for, by having, instead of the two cam-plates N for said unit, a single cam-plate ls l, Figure 5, having a cam-edge tild substantially coextensive with all of the denominations of the register-unit. Only one cam-plate-depressing tappet tilt is provided. in the tappet-unit 85!! for depressing said cam-plate I94, and the latter is connected to simultaneously depress both slides till for said register-unit, and thereby simultaneously move both sections of the couplers Silt for said register-unit into effective position which is maintained while the carriage traverses a zone at which the full register-=unit is used. W5, Figure 5, represents an ofiset with which the cam= plate I98 is provided to reach the offset tab of one of the slides till, the tale of the other slide being directly under the cam-plate let. A. -keeper-bolt 692 extends through the camplates tilt, and is removable for interchange or replacement of said cam plates.

It will be evident in the foregoing description concerning Figure 15 that the accumulation of some amounts in one section of a register-unit and of other amounts in another section of the same register unit is exemplified by the accumu= lation of the second and third column amounts respectively in the right and left sections of the middle register-unit.

lit will also be evident that the provision for sectional use of the large register-units makes it feasible to have the first three columns of r the form 693 each no wider, substantially, than the illustrative six denominations (plus punc tuation spaces) needed for the amounts entered in said first three columns.

Provision for sectional use of the registerunits also extends the range or" usefulness of the machine. For example, where previous machines, oi the Underwood l-lanson class, having three registers, each of say twelve denomination capacity, could only accumulate three totals, by using all three of said register-units, even though none of the totals exceeded six denominations, the present machine can. accumulate said three totals of six denominations each, by using only two of the three register-units, and. still have left for other totals a section of one of said register-units and. the entire third registerunit, the latter being usable either sectionally for small totals, or in full for totals up to twelve denominations.

Regarding the described offsetting oi the tabulating counter-stop from the tappets Hit, by means of the complementary units i53 Figure 15, it will be observed that such oii'setting is primarily on account of arranging the connections of the cross blades to the distributive racks Q9 in simple echelon formation for full register operation as in said Patent No. 2,090,352.

Thus, referring to the middle set of twelve distributive racks Figure 16, the connections thereof to said lolades 9% form a single line in echelon between the highest and lowest of the twelve distributive racks. The slope of the line is, of course, opposite to that of a similar line of connections lllti from the cross bladeslil to the master racks 96, Figure 16, in order to effect the usual transposition of denominational sequence of the distributive racks 99 as compared with the master raclrs It will be explained, now, how a register section comprising the higher denominations of a full register may he used without offsetting the taloulating counter-stop th from the companion tappets tit, tilt.

Thus, referring to the set of distributive racks 99 at the right of Figure 16, there may he two lines of connections ildl, one line for each section of six denominations of said right hand set of twelve distributive racks 99, and disposed so that each section of six racks 99 is connected to the same section of six cross blades 98, of lower denominations. Further, the cam plates 505 for the two distributive-rack-sections, of six denominations each, are disposed so that their cam edges 5 w are directly one behind the other as in Figures e and 17, instead of being laterally offset as in Figure 15. Thus, Figure 17, the cam edge M5 for the register section that ordinnarily comprises the six highest denominations of a twelve denomination register is directly belid jacks 8| of lowest denominations but it is also behind the group L of six tabulating stops 15 of lowest denominations. Referring to Figure 17, the tappet unit I5I has a register selecting tappet I05 for engaging the front cam edge H5 associated with, say, the six lowest denominations of the register and said unit I5I also includes a tabulating counter-stop and a denomination selecting tappet 82. The unit 15W, Figure 17, has a tappet I06 placed to engage the next-cam edge H5, associated with the register section of six highest denominations. This unit i51 itself includes atabulating counter-stop 80 since the latter need not be oiiset.

The arrangement of connections 38I for the right hand set of twelve distributive racks 99, Figure 16, is suitable where the latter are used only sectionally.- Where operation of a register up to full capacity is desired, an extra register (the middle register of Figure 16) may be provided and may have its distributive racks 99 connected as shown for the middle set in Figure 18. In Figure 17, the cam plate 295 having a full length cam edge 5 is associated with said middle register and the corresponding tappet unit I5I' has a tappet IOB for engaging said edge H5 The full set of distributive racks 99 at the left of Figure 16 illustrates another scheme of connections to the cross blades 98 devised for both sectional and full register operation without involving offsetting of any tabulating stop 80 from its companion tappets 82, I08. In said scheme there is one line of connections 382 whereby, for full register operation, all ofthe twelve distributive racks 99 are connected to all of the twelve cross blades 98 in a manner similar to the connections for the middle set of racks 99, Figure 16. In addition, there is another line of corn nections 383 whereby the distributive racks 99 of six highest denominations of the full set are connected to the cross blades 99 of six lowest denominations. For sectional use of the register corresponding to the full set of distributive racks 99 at the left of Figure 16, the cam plates I associated with the two sections are disposed, Figure 18, with their cam edges H5 one directly behind the other and both directly behind the group Z of six lower jacks l8! and the group L of six lower denominational tabulating stops 88 so that said groups Z and L work in conjunction with either cam plate edge H5. This scheme provides for using the section of six highest denominations of the full register, through the six lower denominational jacks 8|, without necessitating ofisetting of the tabulating counter-stop 80 from the jack engaging tappet 82. In Figure 18 the tappet unit I51 has a tappet I 06 to engage the foremost cam edge I I5 associated with, say, the section of six higher denominations; and the tappet unit l5! has a tappet I06 to engage the other cam edge H5 associated with the section of six lower denominations. Said tappet unit ISI for the section of higher denominations, includes the tabulating stop 80. For full register operation, a tappet unit I5l may have two tappets I06 placed to engage successively two cam edges I I5 ofiset laterally as in Figure 18 so that the edge H5 associated with the six higher denominations is engaged first.

Referring to said set of distributive racks 99 at the left of Figure 16, it will be perceived that the section of six higher denominations of said racks 99 is connected by the connections 382 and 383 both to the section of six lower-denominations and to the section of six higher denominations of the cross blades 98. Therefore, said section of six higher denominations of said racks 99 may operate either through the lower section Z of jacks 82 for sectional register operation or through the higher section it of the jacks 82 for full register operation. Thus, when operating one of the higher set .01 distributive racks 99 through the higher section it of jacks 8i, as at full register operation, a corresponding one of the distributive racks 99 of the lower section is concomitantly operated. But such concomitant operation of one of the distributive racks 99 of the lower section may be idle since at that time the active tappet unit l5I" has only one of'the two tappets N35 efiective, namely, the one for the right hand (Figure 18) cam edge M5 for the higher section of racks 99, and hence renders effective only the corresponding section of cou= piers 893, the other or lower section of couplers remaining depressed. Similarly, when one of the lower section of distributive racks 99 is operated through the lower set 1 of jacks M a corresponding one of the distributive racks 99 of the higher section is concomitantly, but idly, operated.

it will be understood that each cam plate 395, having the cam edge H5, N9, M5 or M5 is operatively connected to the appropriate coupler controlling plate I i i by means of the appropriately arranged tab I35, plate i 95 and the train comprising H98, I99 etc. to the crank stud E20 for the coupler controlling plate ill.

Following the indexing of an amount in the register-bars and preceding the advance of the latter by the general-operator cross-bar it, the entire set of computing wheels Si, in each twelve denomination-register unit which has been called into play by means of the carriage-controlled register-section-selecting trains, is shifted into mesh with either the corresponding idlers 63 or the register-bar racks 64. For this purpose, and for disengaging said computing wheels precedent to the return of the register-bars, use may be made of the computing-wheel shifting mechanism and state-controlling mechanism disclosed in my co-pending application No. 607,275, filed April 25, 1932, now Patent No. 2,091,717, dated August 31, 1937. Said mechanism may be briefly described as follows:

Each twelve-denominations unit has a statecontroller 239, Figures 1, 2, 8, 9, 10 and 11, extending fore and aft along the bottom of the computing base B and urged forward by a spring 23L An upright latch-rod 232 projecting through a guide-plate 233 normally engages a shoulder 23, Figure 10, of the state-controller 230 to keep the latter in neutral position. The upright latchrod 232 is further guided by the register-guidebar plate I23 and pins 235, Figure 8, therein. Headed screws 236 slidably support the statecontroller 230 at its rear end-portion and at its forward end-portion the state-controller works in a guide 231 provided on a frame-cross member 239, Figure-1.

A cam 238, Figure 9, on the state-controller works a cross-slide 239 mounted on the guide 231, Figure 1, whereby a U-shaped member 240, connected to said cross-slide 239 and splined to a computing-wheel-shifting rock-shaft 2, is shifted along the latter to engage either a yoke 242 having side arms243, or an arm 2. Said yoke 242, with its side arms connected to the Till tive rotation of said wheels.

shiftable computing-wheel irameliil by links 265, is normally loose on the rock-shaft il ll as is also the arm 2 56, the latter having a slot for its connection to said frame $55 at. Edi. Upon the retraction of the latch-rod 232 the resulting forward shift of the state-controller is limited by a secondary latch-rod 269 engaging a shoulder 2%, Figure 10, of said state-controller. Such limited state-controller shift acts, through. the cross-slide and companion member to couple the arm 2% to the computing-wheel roch= shaft 2 3i. Upon retraction of a secondary latch rod the resulting further shift of the state= controller 2st acts to couple the yoke 2 32, instead of the arm Bid, to the computing-wheel roclnshait B ill.

With the arm 2d coupled to the roclr-shaii't 2 9 as a result of retracting only the primary iatch= rod the rocking or" said shaft 2M clockwise of Figure 1 will swing the frame downw about on axle 2511 for the idlers to mess. t w computing wheels ti with the racks i'id for add With the yoke 2A3, instead of said arm 26d, coupled to the reels shaft 2 30, as a result of retracting also the secondary latch-rod 259, the clockwise rocking of the ,shaft will shift the frame 65 rearwardly to mesh the computing wheels fill with. the idlers for sugtractive rotation of said wheels. The rock-shaft 2 3i remains rocked during the advance of the register bars (32. Before return of the latter, said shaft 3 3i is rocked to its normal position, to thereby unmesh the computing wh els Ell from the racks 6 1 or idlers 63. By means of operating connections, not shown, said rock-shaft 2 h] is worked in timed relation to the reciprocation of the general-operator cross-bar By means of other connections not shown, a state= controller restorer is worked in conjunction with the return stroke of the general-operator cross-bar E6 to restore the state-controller 23v, cross-slide 239 and rock-shaft-coupling member t lt to normal positions, following the unmeshing of the computing wheels ill, the latch-rods being urged by springs, not shown, to reengage the restored state-controller The secondary latch-rods 2 1?) for the several register-units are connected as at 256, Figure 2, to a rock-shaft 255 for joint retraction by the rocking of said shaft 255. Said shaft may he rocked, to retract said latch-rods 2%), by means of a manually operable subtraction-hey mechanism,

not shown, or a carriage-controlled subtractionsetting mechanism not shown, said mechanisms being of the nature described in my said co-pending application No. 607,275, now Patent No. 2,- 091,717.

Novel provision is herein made whereby the addition latch-rod 232 of a register-unit" is retracted eonjointly with the carriage effected se= lection of a section of said register-unit, but irrespective of which section is selected, and said provision is shown embodied in the following devices, Figures 7, 8, 9 and 11.

A latch-rod-retracting lever 256 is fulcrumed behind the register-bar guide-plate E23 on a stud 25? and is articulated to the primary latchrod 232, as at 258, Figure 9. At operation of one of the register-section-selecting trains for the register-unit by means of the carriage-tappet ltd, said lever 256 is rocked clockwise from the Figure iii position to retract the latch-rod For this purpose, the stud i2i of the coupler-shifter-actuating rock-shaft lid of each train is operatively connected to said lever 256; said lever being directly engageable by the stud E26 of one rockshaft Hill, and the stud hill of the other rock-shaft l iii of the register-unit engaging an intermediate lever 2e11, fulcrumed behind the plate 923 on a stud 262, said intermediate lever, in turn, engaging said latch-rod-retracting lever 256. As the ieithand coupler-shifter l l, at Figure 8, is raised by its rock-shaft Mil to move the corresponding section of couplers M3 to effective position, the stud iii directly engages the lever and rocks the latter to retract the latch-rod as illustrated in Figure 8. Should the right-hand coupler-shiiter ill be raised by its rock-shaft Hi the latter, through its stud iii, will rock the intermediate lever Zdl cotn'lter-clockwise, thereby, in

turn, rocking the latch-rod-retracting lever 25% to retract the latch-rod as in Figure 11.

Thus the operation of selecting either section of the register-unit retracts the latch-rod for resulting release of the state-controller 2 1 to predetermine additive rotation of the computing wheels iii. If, in addition to the thus effected retraction of the primary latch-rod 282, the secondary latchqod 269 is also retracted, as by operation of the subtraction-hey mechanism, the resulting further movement of the state-controller predetermines subtractive, instead of additive, rotation of the computing wheels iii.

Provision for insuring restoration of the couplers notches 259 forming cams 265d for engaging the studs Hit of thecoupler-shifting rock-shafts Mil. Said cam-slide is slidably guided by slots of the framework cross-member Hi2 and by studs 2% on the frame ill? and is yielclably held by a spring 286 in normal position, Figure 3, in which said notches 25d clear said rock-shaft studs iii. A push-rod 253 connected to said cam-slide is slidable in a lug W2 of said cross-member m2 and has its end normally in the path of a cam 26:3 formed by a slot in the general operatcr rack (19d. Thus, during the advance stroke of the general operator, said raclz-cam acts to displace said cam-slide to the .Figure 8 position to depress any stud 828 which may have remained in raised position, thereby insuring restoration of the coupler-shifters M l and couplers it? to their normal inefiective positions.

It will be remembered that the bell-cranks 9d, 3 and H82, forming part or" the denomination and punctuating jack-trains and cycle-tripping train, have the common fulcrum-rod 43d, and that the levers tilt of the register-section-selecting trains have the connncn fulcrum-rod M2. By appropriate displacement of said fulcrum-rods from their normal positions, a slack is formed in said trains relatively to the tappets E32, itii and 1 the cycle-tripping tooth M9 on the carriage, and said trains are thereby disabled. A rock-shaft 265, journaled in posts 2%, on a cross-bar 2M of the computing-base framework, Figure 3, is roclrable to effect displacement and restoration of said fulcrum-rods 95, M2, said rock-shaft 265 having upright arms 26d, supporting the fulcram-rod 95, and horizontal arms 269, from which links 271i! depend and support the fulcrumrod M2. 1

A latch-arm 275 is mounted on a rock-shaft 212 and is connected to the latter by a one-way yieldable connection, comprising a spring 213 and rock-shaft arm 27d. Said latch-arm 2' nor mally engages a step 215 or" an arm 216 of the fulcrum-rod controlling rock-shaft 265, to hold the latter and the fulcrum-rods 95, M2 in the normal, Figure 2, positions, whereby the aforesaid trains lilil includes a cam-slide which has e are in'condition for actuation by the carriage. Upon withdrawing the latch-arm 2H therefrom, said arm 276 is turned by the weight of the parts, and thereby rocks its shaft 265 until a second step 211 on said arm 276 stops against the withdrawn latch-arm 2'. Thus the withdrawal of said latch-arm 2' results in the fulcrum-rod 95 being; instantaneously displaced rearwardly and the fulcrum-rod H2 downwardly to instantaneously disable said trains. Upon disablement of said trains the cam-plates I05 and slides I01 may.

drop to position wherein said slides rest upon a cushioning pad 219a provided upon one of the slide guiding cross-bars I34. Slotted guides 218 on the cross-bar 261 guide the pendently-supported fulcrum rod H2. Other features relating to the disablement and restoration of said trains are describedin my aforesaid application, Serial No. 72,348 now Patent No. 2,160,487.

What is claimed is:

1. In a machine of the character described, the combination of a carriage, a multiplicity of indexable register-bars of consecutive denominations forming part of a register-unit, said bars shiitable individually to an index-receiving position, a state-controller associated with said register-unit and conditionable for a certain computing state, a series of denominational driver-shift ing trains, traversable by said carriage for shifting said register-bars seriatim, said trains including couplers actuatable for operatively connecting the trains to the register-bars, a plurality of selectively operable register-section-defining coupler controllers, each serving to independently bring into use one or another predetermined section of the couplers consonantly with sectional use of the register-unit, and means operatively connecting said state-controller to said couplercontrollers whereby concomitantly with use-0f either section of the couplers said state-controller is conditioned.

2. In a combined typewriting and computing machine, the combination with digit-type keys, a step-by-step feeding typing carriage coacting with said keys, and a set of indexable computingwheel drivers for a register-unit having a multiplicity of consecutive denominations, one driver for each denomination, said drivers being shiftable individually to a position wherein they are indexable by means of said keys preparatory to cycling said drivers, of a set of driver-shifting jacks, one jack for each driver, a plurality of jacktraversing tappets on said carriage for different computing zones for traversing and actuating said jacks seriatim, all of said drivers being normally operatively disconnected from said jacks, said tappets being separated, for certain narrow-column typing, by carriage step units less in number than the number of said consecutive denominations, wherefore two sections of said jacks may be actuated simultaneously, devices individually operable to operatively connect said jack-sections to corresponding sections of the set of computing-wheel drivers, and means arranged on the carriage in correlation with said tappets to operate said devices selectively to determine whether or not the jack-section operated by one or the other tappet is operatively connected to the companion drivers for shifting the latter.

3. In a machine of the character described having a computing register for a multiplicity of consecutive denominations, the combination with a set of indexable register-wheel drivers, one driver for each of said denominations, shiftable seriatim to an index-receiving position, of a set of denominational driver-shifting jacks, a carriage having a denomination-selector to engage said jacks seriatim, a plurality of individually operable register-sectiondefining elements disposed in staggered relation in the path of carriage travel so as to be ofiset, one from the other, transversely oilsaid path and along said path, and a plurality of groups of jack-and-driver connectors, each groupassociated with a companion register-section-defining element and operable by the latter to connect, operatively, a predetermined section of said set of drivers to a companion section of said set of jacks, and means on the carriage to operate said register-section-selecting elements selectively, whereby to determine, relative to traverse of a section of said set of jacks by said denomination-selector, whether said section of jacks will be operatively connected to the companion section of said set of drivers.

4. In a machine of the character described, the combination of a unitary set of indexable computing wheel drivers for a single register unit of an extensive number of denominations, one driver for each denomination, a plurality of denominational jacks less in number than the number of computing wheel drivers in that said plurality' of jacks is con: non to different sections of said unitary set of drivers, a carriage feedable in denomination-selecting steps, means enabling the carriage to operate said jacks seriatim at said steps, and means controlled by the carriage to connect operatively a predetermined one or other of said sections of drivers to said jacks, said carriage and jacks serving to advance the drivers seriatim to index receiving positions and said jacks and drivers normally being operatively disconnected.

5. In a machine of the character described, the combination of a unitary set of indexable computing wheel drivers for a single register unit of an extensive number of denominations, one driver for each denomination, a set of denominational jacks corresponding in number to said denominations, a carriage feedable in denomination selecting steps, a set of denominational tabulating stops for said carriage corresponding to a predetermined section of said jacks, a plurality of register section defining devices selectively operable to connect a predetermined one or other section of said drivers to said section of jacks for split register operation, said set of tabulating stops, section of jacks, and register section defining devices being ofiset one from the other transversely of the path of carriage travel, and a computing zone defining unit on said carriage presenting a jack operating tappet, a register section selecting tappet and a tabulating tooth, said unit being adaptable for selecting either section of the register by placing the register selecting tappet thereon to engage the appropriate register-section-defining device.

6. In a machine of the character described, the combination of a unitary set of indexable computing wheel drivers for a single register unit of an extensive number of denominations, one driver for each denomination, a set of denominational jacks corresponding in number to said denominations, a set of intermediate elements, one between each jack and corresponding driver, said set of elements including a set of couplers operable sectionally to connect operatively a predetermined one or other section of said drivers to said jacks, said elements being connected individually to corresponding ones of all of said jacks by a corresponding series of connections and a section oi said elements being additionally connected only to a section of said jacks by a correspondingly limited series of connections, a carriage ieedable in denomination selecting steps and adapted to actuate said jacks devices operable by said carriage in denominational order for shifting said drivers individually to index-receiving position, said drivers being normally disconnected from said denominational devices, a plurality of register-s ction-defining devices selectively operable to connect one or another of predetermined sections of said set of drivers to said denominational devices for split register operation, and means on the carriage to engage and operate one or another of said register-section-deflning devices according to a predetermined plan.

8. In a computing machine 01 the character described, the combination with a plurality 01' sets of indexable computing-wheel-drivers, the drivers in each set corresponding in number to a multiplicity of consecutive denominations for an associate register 01' large denominational capacity, said drivers being individually shiitable to index-receiving position, a denominationselecting carriage, a single group of denominational jacks operable seriatim by said carriage for shifting the drivers to said position, connecttions extending from the group of jacks to the several sets of drivers and including, for each set of drivers, a plurality of register-sectiondefining devices selectively operable ior connecting one or another predetermined section or all of any set of drivers to said jacks, and means enabling the carriage to engage and operate said register-section-defining devices selectively.

HENRY L PIT'MAN.

CERTIFICATE OF CORRECTION. Patent N0. 2, 202,671. ma 2 191p.

I HENRY L. PITMAN. 4

It is hereby certified that error appears in the printed specificetion of the above numbered patent requiring correctiori as follows: Page 10, first column, line 12- 1}, claim'Y, for "denormally disconnected from 881161 denominetionalf' read.denominetion-selecting carriage, of denominational"; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

I Signed and sealed this 50th day of July, A. D. 19L o.

Henry Van Arsdale (Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION. BatentNo. 2,202,671. May 28, 1940.

HENRY. L. PITMAN. 4 A

It is hereby certified that error appears in the p ri'r xted specificetion of the above numbered patent requiring correctioh as follows: Page 10, fi rst column, line 12- 1 5, claim'], for "denormally disconnected from said. de-

' nomi na tionalf' readr-den'omina tionwelecting carriage, of denominatiopal-; and that the said Letters Patent should be readwith this correction therein that theeame may confom t the recerd of the case in the Patent Office. Signed and sealed this 50th day of July, A. D. 19140. I

I 'Henry Van Arsdale (Seal) Acting Commissioner of Patents. 

